Journal of Fluids Engineering: Recent submissions

Now showing items 4641-4660 of 9024

    • An Experimental Investigation of Possible Methods to Reduce Laminar Entry Lengths 

      A. F. Emery; C. S. Chen (The American Society of Mechanical Engineers (ASME), 1968)
      The use of annuli, converging nozzles, and a converging-diverging wall section in round tubes to reduce the laminar entry lengths was studied. Over a very limited range of Reynolds numbers ...

    • Capillary Action in Small Jets Impinging on Liquid Surfaces 

      John H. Lienhard (The American Society of Mechanical Engineers (ASME), 1968)

    • A Method of Determining Some Distensible Tube Properties 

      J. L. Campbell (The American Society of Mechanical Engineers (ASME), 1968)

    • Bubble Trajectories and Equilibrium Levels in Vibrated Liquid Columns 

      J. M. Foster; J. A. Botts; A. R. Barbin; R. I. Vachon (The American Society of Mechanical Engineers (ASME), 1968)
      An analysis of bubble behavior in a vertically vibrated liquid column and experimental results of equilibrium level determinations are presented. The analysis avoids the usual approximation of ...

    • On Cumulative Collapse of Cavitation Cavities 

      S. P. Kozirev (The American Society of Mechanical Engineers (ASME), 1968)
      Highly nonsymmetrical bubble collapses are viewed photographically, and it is noted that the collapses occur in such a fashion as to produce liquid jets. These are considered as similar to ...

    • Frequency-Dependent Friction in Transient Pipe Flow 

      W. Zielke (The American Society of Mechanical Engineers (ASME), 1968)
      An equation is derived, which relates the wall shear stress in transient laminar pipe flow to the instantaneous mean velocity and to the weighted past velocity changes. The term is applied ...

    • Confined-Jet Amplifier 

      E. A. Mayer (The American Society of Mechanical Engineers (ASME), 1968)
      The confined-jet amplifier is a new fluidic amplifier, consisting of a power nozzle and a receiver which are located on the same axis in an enclosure. The control input is the enclosure ...

    • The Stability of a Simple Surge Tank 

      R. K. Duggins (The American Society of Mechanical Engineers (ASME), 1968)
      An equation is derived to describe small oscillations in a simple surge tank for a wider range of operating conditions than hitherto considered. It is presented in a new non-dimensional form ...

    • Vent Effects on the Response of a Proportional Fluid Amplifier 

      A. J. Healey (The American Society of Mechanical Engineers (ASME), 1968)
      Fluid amplifier dynamic response can be a limiting factor in the design of closed-loop systems. An approximation analysis is presented which extends previous work to include the effect of vent ...

    • The Behavior of a Spherical Bubble in the Vicinity of a Solid Wall 

      A. Shima (The American Society of Mechanical Engineers (ASME), 1968)
      The behavior of a spherical bubble as it collapses in the vicinity of a solid wall was theoretically analyzed, in terms of the effect of compressibility, viscosity, surface tension, and gravity ...

    • Similarity Solutions of Laminar, Incompressible Boundary Layer Equations of Non-Newtonian Fluids 

      A. G. Hansen; T. Y. Na (The American Society of Mechanical Engineers (ASME), 1968)
      A similarity analysis is made of the steady, two-dimensional, laminar boundary layer flow of non-Newtonian fluids. The important conclusion drawn from this analysis is that for non-Newtonian ...

    • Vorticity Transfer and Production in Steady Inviscid Flow 

      J. H. Horlock (The American Society of Mechanical Engineers (ASME), 1968)
      General equations are derived for the rate of change of vorticity in compressible, inviscid flow into which fluid may be introduced, and in which nonuniform body forces may exist. Examples of ...

    • Speed Regulation Study for Bay D’Espoir Hydroelectric Generating Station 

      R. A. Newey (The American Society of Mechanical Engineers (ASME), 1968)
      An island-wide power network has recently been built in Newfoundland, linking together the various local power systems for the first time. Power for this network will be provided from Bay ...

    • A Study of the Notch Effect and of Specimen Design and Loading on the Fatigue Properties of Cast Steel 

      J. F. Wallace; C. W. Briggs; C. Vishnevsky (The American Society of Mechanical Engineers (ASME), 1968)
      Scope of the research report: The purpose of the research included in this report is to extend the knowledge on the fatigue properties of cast steel by presenting a study of the effect of ...

    • Radial Flow Velocity Field for Predicting Upper-Bound Solutions for Plane Strain Extrusion 

      R. G. Fenton (The American Society of Mechanical Engineers (ASME), 1968)
      The upper bound of the average ram pressure, based on an assumed radial flow velocity field, is derived for plane strain extrusion. Ram pressures are calculated for a complete range of reduction ...

    • The Influence of Notches on Mechanical Behavior at Elevated Temperatures: Some Metallographic Observations 

      R. M. Goldhoff; A. J. Brothers (The American Society of Mechanical Engineers (ASME), 1968)
      A metallographic study of ruptured and unruptured notch bars is reported in this paper. The alloys are Cr-Mo-V steels tested in the range 1000–1050 deg F. Crack initiation and propagation in ...

    • The Microplastic Strain Energy Criterion Applied to Fatigue 

      A. Esin (The American Society of Mechanical Engineers (ASME), 1968)
      This paper describes the research work done to develop an analytical approach to fatigue failure in metals for a life in excess of 105 cycles which will enable the prediction of fatigue data ...

    • The Rosette, Star, Tensile Fracture 

      W. R. Clough; R. M. Vennett; R. J. Hrubec (The American Society of Mechanical Engineers (ASME), 1968)
      A type of tensile fracture topography encountered fairly often in certain temperature ranges with specimens from forgings, billets, rod, and bar of quenched and tempered steel, is the “star” ...

    • The Split, Layered, Cup-and-Cone Tensile Fracture 

      R. J. Hrubec; L. A. Jackman; W. R. Clough (The American Society of Mechanical Engineers (ASME), 1968)
      Quenched and tempered plate steel is capable of modified cup-and-cone fractures involving one or more longitudinal cracks “parallel” to the flat plate surfaces. The occurrence was verified by ...

    • Dynamic Strain Aging and the Charpy Specimen Behavior of Annealed 4340 Steel 

      W. R. Clough; L. A. Jackman; Y. G. Andreev (The American Society of Mechanical Engineers (ASME), 1968)
      V-notch Charpy bars were ruptured at seven deflection rates at test temperatures from the ambient through the blue-brittle range, while unnotched tensile specimens were equivalently tested at ...